diff --git a/src/language/en-GB/tpl_mokoonyx.ini b/src/language/en-GB/tpl_mokoonyx.ini
index ad8dea6..8c26548 100644
--- a/src/language/en-GB/tpl_mokoonyx.ini
+++ b/src/language/en-GB/tpl_mokoonyx.ini
@@ -176,7 +176,7 @@ TPL_MOKOONYX_CSS_VARS_BLOCK_COLORS_LABEL="Block Colour System (top-a / top-b / b
 TPL_MOKOONYX_CSS_VARS_BLOCK_COLORS_DESC="Automatic brand colour palette for modules in <code>top-a</code>, <code>top-b</code>, <code>bottom-a</code>, and <code>bottom-b</code> positions. Colours assigned by <code>:nth-child()</code> order — no classes needed.<br><br><strong>Slot palette</strong><br><code>--block-color-1</code> / <code>--block-text-1</code> — 1st module<br><code>--block-color-2</code> / <code>--block-text-2</code> — 2nd module<br><code>--block-color-3</code> / <code>--block-text-3</code> — 3rd module<br><code>--block-color-4</code> / <code>--block-text-4</code> — 4th module<br><br><strong>Named overrides</strong> (add an ID to the module HTML to bypass slot colour)<br><code>--block-highlight-bg</code> / <code>--block-highlight-text</code> — for <code>#block-highlight</code><br><code>--block-cta-bg</code> / <code>--block-cta-text</code> — for <code>#block-cta</code><br><code>--block-alert-bg</code> / <code>--block-alert-text</code> — for <code>#block-alert</code><br><br><strong>Priority:</strong> Named ID &gt; Slot colour. No <code>!important</code> needed — specificity handles it."
 
 TPL_MOKOONYX_CSS_VARS_HEADER_LABEL="Header Background"
-TPL_MOKOONYX_CSS_VARS_HEADER_DESC="Controls the background of the topbar/header area.<br><code>--header-background-image</code> — CSS <code>background-image</code> value (default: built-in SVG pattern)<br><code>--header-background-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--header-background-repeat</code> — e.g. <code>repeat</code>, <code>no-repeat</code><br><code>--header-background-size</code> — e.g. <code>auto</code>, <code>cover</code>, <code>contain</code>"
+TPL_MOKOONYX_CSS_VARS_HEADER_DESC="Controls the background of the topbar/header area.<br><code>--header-background-color</code> — fallback colour when no image is set (default: <code>#adadad</code> light / <code>#1a1f2b</code> dark). Set <code>--header-background-image: none;</code> to use a solid colour.<br><code>--header-background-image</code> — CSS <code>background-image</code> value (default: built-in SVG pattern)<br><code>--header-background-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--header-background-repeat</code> — e.g. <code>repeat</code>, <code>no-repeat</code><br><code>--header-background-size</code> — e.g. <code>auto</code>, <code>cover</code>, <code>contain</code>"
 
 TPL_MOKOONYX_CSS_VARS_CONTAINERS_LABEL="Container Backgrounds"
 TPL_MOKOONYX_CSS_VARS_CONTAINERS_DESC="Each layout container has its own background variables. Replace <code>{pos}</code> with: <code>below-topbar</code>, <code>top-a</code>, <code>top-b</code>, <code>sidebar</code>, <code>bottom-a</code>, or <code>bottom-b</code>.<br><br><code>--container-{pos}-bg-image</code> — Background image (default: <code>none</code>)<br><code>--container-{pos}-bg-color</code> — Background colour (default: <code>transparent</code>)<br><code>--container-{pos}-bg-position</code> — Background position<br><code>--container-{pos}-bg-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--container-{pos}-bg-repeat</code> — Repeat behaviour<br><code>--container-{pos}-bg-size</code> — e.g. <code>cover</code>, <code>auto</code><br><code>--container-{pos}-border</code> — Border shorthand<br><code>--container-{pos}-border-radius</code> — Border radius<br><br>Also: <code>--container-toc-bg</code> / <code>--container-toc-color</code> for the TOC sidebar."
diff --git a/src/language/en-US/tpl_mokoonyx.ini b/src/language/en-US/tpl_mokoonyx.ini
index 092c003..3bd4663 100644
--- a/src/language/en-US/tpl_mokoonyx.ini
+++ b/src/language/en-US/tpl_mokoonyx.ini
@@ -176,7 +176,7 @@ TPL_MOKOONYX_CSS_VARS_BLOCK_COLORS_LABEL="Block Color System (top-a / top-b / bo
 TPL_MOKOONYX_CSS_VARS_BLOCK_COLORS_DESC="Automatic brand color palette for modules in <code>top-a</code>, <code>top-b</code>, <code>bottom-a</code>, and <code>bottom-b</code> positions. Colors assigned by <code>:nth-child()</code> order — no classes needed.<br><br><strong>Slot palette</strong><br><code>--block-color-1</code> / <code>--block-text-1</code> — 1st module<br><code>--block-color-2</code> / <code>--block-text-2</code> — 2nd module<br><code>--block-color-3</code> / <code>--block-text-3</code> — 3rd module<br><code>--block-color-4</code> / <code>--block-text-4</code> — 4th module<br><br><strong>Named overrides</strong> (add an ID to the module HTML to bypass slot color)<br><code>--block-highlight-bg</code> / <code>--block-highlight-text</code> — for <code>#block-highlight</code><br><code>--block-cta-bg</code> / <code>--block-cta-text</code> — for <code>#block-cta</code><br><code>--block-alert-bg</code> / <code>--block-alert-text</code> — for <code>#block-alert</code><br><br><strong>Priority:</strong> Named ID &gt; Slot color. No <code>!important</code> needed — specificity handles it."
 
 TPL_MOKOONYX_CSS_VARS_HEADER_LABEL="Header Background"
-TPL_MOKOONYX_CSS_VARS_HEADER_DESC="Controls the background of the topbar/header area.<br><code>--header-background-image</code> — CSS <code>background-image</code> value (default: built-in SVG pattern)<br><code>--header-background-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--header-background-repeat</code> — e.g. <code>repeat</code>, <code>no-repeat</code><br><code>--header-background-size</code> — e.g. <code>auto</code>, <code>cover</code>, <code>contain</code>"
+TPL_MOKOONYX_CSS_VARS_HEADER_DESC="Controls the background of the topbar/header area.<br><code>--header-background-color</code> — fallback color when no image is set (default: <code>#adadad</code> light / <code>#1a1f2b</code> dark). Set <code>--header-background-image: none;</code> to use a solid color.<br><code>--header-background-image</code> — CSS <code>background-image</code> value (default: built-in SVG pattern)<br><code>--header-background-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--header-background-repeat</code> — e.g. <code>repeat</code>, <code>no-repeat</code><br><code>--header-background-size</code> — e.g. <code>auto</code>, <code>cover</code>, <code>contain</code>"
 
 TPL_MOKOONYX_CSS_VARS_CONTAINERS_LABEL="Container Backgrounds"
 TPL_MOKOONYX_CSS_VARS_CONTAINERS_DESC="Each layout container has its own background variables. Replace <code>{pos}</code> with: <code>below-topbar</code>, <code>top-a</code>, <code>top-b</code>, <code>sidebar</code>, <code>bottom-a</code>, or <code>bottom-b</code>.<br><br><code>--container-{pos}-bg-image</code> — Background image (default: <code>none</code>)<br><code>--container-{pos}-bg-color</code> — Background color (default: <code>transparent</code>)<br><code>--container-{pos}-bg-position</code> — Background position<br><code>--container-{pos}-bg-attachment</code> — <code>fixed</code> or <code>scroll</code><br><code>--container-{pos}-bg-repeat</code> — Repeat behavior<br><code>--container-{pos}-bg-size</code> — e.g. <code>cover</code>, <code>auto</code><br><code>--container-{pos}-border</code> — Border shorthand<br><code>--container-{pos}-border-radius</code> — Border radius<br><br>Also: <code>--container-toc-bg</code> / <code>--container-toc-color</code> for the TOC sidebar."